"Hadoop" 14, hadoop2.5 's mapreduce configuration

Configuring MapReduce

<?xml version= "1.0"?><?xml-stylesheet type= "text/xsl" href= "configuration.xsl"?><!--Licensed under the Apache License, Version 2.0 (the "License");  You are not a use of this file except in compliance with the License. Obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 unless required by applicable law O  R agreed to writing, software distributed under the License are distributed on a "as is" BASIS, without warranties OR  CONDITIONS of any KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. See accompanying LICENSE file.--><!--Put Site-specific property overrides in this file.--<configuration></configuration>Plus this.<configuration>    <property >        <name>Mapreduce.framework.name</name>        <value>Yarn</value>    </Property ></configuration>

And then configure it inside the yarn-site.xml.

<configuration><!--Site specific YARN Configuration Properties --    <property >        <name>Yarn.resourcemanager.hostname</name>        <!--where to run the appropriate program--        <value>Hadoop1</value>    </Property >    <property >        <name>Yarn.nodemanager.aux-services</name>        <value>Mapreduce_shuffle</value>    </Property >    <property >        <name>Yarn.nodemanager.aux-services.mapreduce_shuffle.class</name>        <value>Org.apache.hadoop.mapred.ShuffleHandler</value>    </Property > </configuration>

Start

After you start HDFs in front
When you start yarn

sbin/start-yarn.sh

HADOOP1 on

Node1

Node2

Node3

Project
Start our project of the MapReduce in Eclipse run

First build a Java project

Then import the appropriate package
Common the following

Under MapReduce.

Yarn below the amount

Under HDFs,

Our Requirements Documentation

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"Hadoop" 14, hadoop2.5 's mapreduce configuration